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Hook MGCopyAnswer 必然闪退,求解。

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很简单一段代码:

#import <substrate.h>

extern "C" CFTypeRef MGCopyAnswer(CFStringRef);
MSHook(CFTypeRef, MGCopyAnswer, CFStringRef key)
{
	return _MGCopyAnswer(key);
}

%ctor
{
	NSString *appID = [[NSBundle mainBundle] bundleIdentifier];
	if ( appID && [appID isEqualToString:@"com.test.test"])  //这里的ID是演示用的,可自己修改成目标进程ID
	{
		NSLog(@"[test] %@ 开始, IOS版本: %.1f...", appID, kCFCoreFoundationVersionNumber);
		MSHookFunction(MGCopyAnswer, MSHake(MGCopyAnswer));
	}
}

MAKEFILE:

ARCHS = armv7 armv7s arm64
TARGET = iphone:latest:8.0
test2_FRAMEWORKS = UIKit

include theos/makefiles/common.mk

TWEAK_NAME = test2
test2_FILES = Tweak.xm
test2_LIBRARIES = MobileGestalt

include $(THEOS_MAKE_PATH)/tweak.mk

after-install::
	install.exec "killall -9 SpringBoard"

不管在7系统还是8系统上面必然闪退,注释掉 MSHookFunction(MGCopyAnswer, MSHake(MGCopyAnswer)); 就没事了,求解~


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